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Continuing Education — "The Action Level!®"

VOLUME 9(12), December 2012
Journal of Occupational and Environmental Hygiene


Provide FULL NAME and EMAIL information below, then answer the questions and click "Submit".

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E-Mail:

CASE STUDIES:

Dispersion and Exposure to a Cough-Generated Aerosol in a Simulated Medical Examination Room
William G. Lindsley, William P. King, Robert E. Thewlis, Jeffrey S. Reynolds, Kedar Panday, Gang Cao and Jonathan V. Szalajda

1. Surgical masks provide as much protection against cough
    aerosols from patients as do N95 respirators. True or False?

True
False
2. So long as a health care worker is not directly in the path of
    a cough or is more than 6 feet away from the patient, they do
    not have to worry about exposure to cough aerosol particles
    from patients. True or False?
True
False
Developing a Framework for Predicting Upper Extremity Muscle Activities, Postures, Velocities, and Accelerations during Computer Use: The Effect of Keyboard Use, Mouse Use, and Individual Factors on Physical Exposures
Jennifer L. Bruno-Garza, Paul J. Catalano, Jeffrey N. Katz, Maaike A. Huysmans and Jack T. Dennerlein

3. This article concluded that _______________ was/were the
    most common predictor(s) of upper extremity muscle activities,
    postures, velocities, and accelerations during computer use.

a. Keyboard use
b. Mouse use
c. Individual factors
d. a and b
e. None of the above
4. The authors expect that the laboratory design of this study
    may have limited the amount of variability in the upper extremity
    muscle activities, postures, velocities, and accelerations that
    were observed in this study, so the predictive capabilities of the
    models described here are worse than if the data had been
    collected in the field. True or False?
True
False
The Evaporation of Mercury Droplets in Indoor Spaces
Rehan Choudhary, Fredric C. Arnold and Nhan T. Nguyen

5. The Arrhenius equation accurately accounts for the temperature
    dependence of the decay constant. True or False?

True
False
6. A constant temperature could be used to further ensure that
    the decay constant reflected only a change in the nature of
    the mercury surface. True or False?
True
False
Transferability of Aliphatic Isocyanates from Recently Applied Paints to the Skin of Auto Body Shop Workers
Thomas T. De Vries, Dhimiter Bello, Meredith H. Stowe, Homero Harari, Martin D. Slade and Carrie A. Redlich

7. Which stage(s) of automotive refinishing may pose a
    potential risk to auto body shop workers for dermal exposure
    to isocyanate species?

a. Spray painting of isocyanate-containing coatings
b. Compounding
c. Unmasking
d. Wet sanding
e. All of the above
8. Human exposure to isocyanates has been associated with:
a. Skin cancer
b. Asthma
c. Apthous ulcers
d. Lung cancer
e. None of the above
Double Shroud Delivery of Silica Precursor for Reducing Hexavalent Chromium in Welding Fume
Jun Wang, Mark Kalivoda, Jianying Guan, Alexandros Theodore, Jessica Sharby, Chang-Yu Wu, Kathleen Paulson and Omar Es-Said

9. When added to the shielding gas, which one of the following
    is the most effective in reducing airborne hexavalent chromium
    (Cr6+) concentration in welding fume?

a. methane
b. NO
c. tetramethylsilane (TMS)
d. CO
10. What is the decomposition product of tetramethylsilane
      (TMS), besides amorphous silica and CO2?
a. methane
b. water
c. silane
d. carbonic acid
Quartz Concentration Trends in Metal and Nonmetal Mining
Winthrop F. Watts, Jr., Tran B. Huynh and Gurumurthy Ramachandran

11. Reduction in respirable quartz dust concentration assures a
      reduction in quartz concentration within the same commodity
      group. True or False?

True
False
12. Which of the following is not a reason why crusher operators'
      exposure to quartz is decreasing?
a. dust controls
b. air conditioned cabs
c. enclosed area-type environments
d. improved pharmacokinetics

Be sure FULL NAME and EMAIL information are provided at the top of this page before submitting your answers.


Deadline for answers is December 31, 2012.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on January 9, 2013.

 
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